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Development of Wind Turbine Generator and Solar Hybrid Power System Model for Rural Electrification 面向农村电气化的风力发电与太阳能混合动力系统模型的开发
Journal La Multiapp Pub Date : 2022-08-26 DOI: 10.37899/journallamultiapp.v3i4.674
Ola Austin Oshin
{"title":"Development of Wind Turbine Generator and Solar Hybrid Power System Model for Rural Electrification","authors":"Ola Austin Oshin","doi":"10.37899/journallamultiapp.v3i4.674","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i4.674","url":null,"abstract":"The countries that are most energy-consuming, where there are industrial developments, where the energy demand is highest are the advanced and developing countries in the world (Mustafa, 2018). For instance, the average power per capital (watts per person) in the United States is 1,377 Watts. In Canada, it is as high as 1,704 Watts per person and in South Africa; it is 445 Watts per person. The average power per capital in Australia is 1,112 Watts and in New Zealand it is 1,020 W per person. Whereas, the average power per capital (watts per person) in Nigeria is 14 W per person. (Austin, O. O et.al, 2020). Also, power supply in many parts of Africa is erratic and characterized with a lot of faults and outages. In Nigeria, it is estimated that only 40 % of Nigerians are connected to the national grid and the connected population are exposed to frequent power outages (Abubakar et al, 2015, Austin O.A, 2020). Unfortunately, the effects of incessant power supply have destroyed many industrial activities, reduced employment and has increased crime activities in many parts of the continent (Africa). Therefore, in order to provide urgent solution to these problems and satisfy the high energy demand in African residential and industrial environments, electrical energy should be reliable, affordable, effective, and sustainable. This calls for an urgent establishment of alternative Renewable Hybrid Power Supply System which will provide continuous, reliable and effective power supply to the consumers.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129882398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Voice over Internet Protocol over Wireless Local Area Network: A Review 无线局域网的互联网协议语音:综述
Journal La Multiapp Pub Date : 2022-08-26 DOI: 10.37899/journallamultiapp.v3i4.687
Ayodele Hephibah, Oluwafemi Ilesanmi Banjo, M. Olla
{"title":"Voice over Internet Protocol over Wireless Local Area Network: A Review","authors":"Ayodele Hephibah, Oluwafemi Ilesanmi Banjo, M. Olla","doi":"10.37899/journallamultiapp.v3i4.687","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i4.687","url":null,"abstract":"The use of Voice over Wireless Local Area Network is seeing a meteoric rise in popularity as a result of its simplicity, non-intrusiveness, and cheap cost of implementation, as well as its low cost of maintenance, universal coverage, and fundamental roaming capabilities. Nevertheless, deploying Voice over Internet Protocol (VoIP) over Wireless Local Area Network (WLAN) is a challenging task for many network managers, architects, planners, designers, and engineers. Because of this, there is a need for a guideline to design, model, and simulate the network before it is deployed. In this work, a variety of models, including mathematical, theoretical, statistical, and graphical models, that are used to measure the quality and features of VoIP are discussed.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124176929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prediction of Gaseous Attenuation of Satellite Signal in Nigeria 尼日利亚卫星信号气体衰减的预测
Journal La Multiapp Pub Date : 2022-06-20 DOI: 10.37899/journallamultiapp.v3i3.671
M. Olla, Akinsanmi Olaitan, Oluwafemi Ilesanmi Banjo, O. S. Ayodele
{"title":"Prediction of Gaseous Attenuation of Satellite Signal in Nigeria","authors":"M. Olla, Akinsanmi Olaitan, Oluwafemi Ilesanmi Banjo, O. S. Ayodele","doi":"10.37899/journallamultiapp.v3i3.671","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i3.671","url":null,"abstract":"It would be noticed that the rate at which people are demanding for satellite services has drastically increased due to increment in population. However, one of the apprehensions of satellite telecommunication engineer is the effects imposed on the earth-to space path link by gaseous attenuation. The research conducted in this paper bordered about investigation with comparison of prediction models for gas attenuation in the six locations in Nigeria, with each of the location taken from six geopolitical within the country. The cities considered for the analysis are: Kaduna (), Lagos (), Abuja (), Portharcort (), Enugu () and Bauchi (). Five-year radiosonde data were used in predicting gas attenuation in the cities selected which represent the geographical characteristics of each zone. Monthly variation of tropospheric components for each zone were computed. Influence of gas attenuation at different frequency bands for each zone were analysed. The results indicated that at clear-sky scenario, gas attenuation effects are still seen on satellite communication. Therefore, this research work would provide the needed statistical data of gas attenuation which would be of tremendous advantage for the link designers for their subsequent planning and design of good telecommunication systems in the six geopolitical zones of Nigeria.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114641922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Web Scraping of Chemical Compounds with an Anti-Drug Feature Using IoT 利用物联网对具有禁毒功能的化合物进行网络抓取
Journal La Multiapp Pub Date : 2022-06-20 DOI: 10.37899/journallamultiapp.v3i3.658
N. M. Hussien, Yasmin Makki Mohialden
{"title":"A Web Scraping of Chemical Compounds with an Anti-Drug Feature Using IoT","authors":"N. M. Hussien, Yasmin Makki Mohialden","doi":"10.37899/journallamultiapp.v3i3.658","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i3.658","url":null,"abstract":"As a result of the COVID-19 epidemic, there has been an increase in the demand for electronic education apps in schools and colleges in recent years. The purpose of this paper is to develop an educational application for chemistry students at different levels of study that will allow them to obtain precise information on chemical substances in a timely and safe manner. This program uses a web scraping technique by applied a  RESRful API to extract information from websites, which is then sent to the student's account. Furthermore, due to the use of the Internet of Things, the application  has an anti-explosives and narcotics property using (IOT). The application can retrieve and save information entered by the user on chemical compounds with a high level of security. The medication's chemical formula, as well as the covalent and ionic bonding of compounds, can be displayed. It also has a database that lists all of the hazardous substances. If a user enters a dangerous compound containing narcotics more than four times, an alarm message is sent to the administrator via the Internet of Things.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121051955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How Do Help “Multigrid Principles based on Numerical Solutions of Partial Differential Equations” for Smoothing Process (Concepts)? 如何帮助“基于偏微分方程数值解的多重网格原理”进行平滑处理(概念)?
Journal La Multiapp Pub Date : 2022-06-20 DOI: 10.37899/journallamultiapp.v3i3.655
Meseret Cherkos Tessema, Abdenie Tuke, A. N. Mohamad, Kasim Rabayo, Kumera Taele Yadeta, Kumera Takele Yadeta
{"title":"How Do Help “Multigrid Principles based on Numerical Solutions of Partial Differential Equations” for Smoothing Process (Concepts)?","authors":"Meseret Cherkos Tessema, Abdenie Tuke, A. N. Mohamad, Kasim Rabayo, Kumera Taele Yadeta, Kumera Takele Yadeta","doi":"10.37899/journallamultiapp.v3i3.655","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i3.655","url":null,"abstract":"In Twenty century, Partial Differential Equations (PDE) are solved by Numerical Approach such as Adam – Smith Methods, Numerical Simulation Methods, Finite Difference methods etc., In this article we discuss about difficulties of solve either Differential equations or PDE in 3 – Dimensional cases. So that we discuss only 1 – Dimensional Multigrid Methods (M. M) and we discuss about M. M.  Errors, Corrections, Type of grid such as Coarse Grid (C. G) and Fine Grid (F. G), Smoothing, non – smoothing approximation of C. G. Finally, we explain that M. G. M. works by decomposing problem into separate length scale and also using an iterative method. This method optimizes errors deduction in the length scales globally. In Multigrid Methods (MgM) several sub – routines must be developed to pass the data from C. G to F. G (Interpolation) from F. G to C. G (Reduction) and correction of the error at each grid interval (Smoothing), simply we have results reaction as (Reduction)C.G⇄F.G (Interpolation).","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"289 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116588624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Review of Software Testing Methods 软件测试方法回顾
Journal La Multiapp Pub Date : 2022-06-20 DOI: 10.37899/journallamultiapp.v3i3.648
Yasmin Makki Mohialden, N. M. Hussien, S. A. Hameed
{"title":"Review of Software Testing Methods","authors":"Yasmin Makki Mohialden, N. M. Hussien, S. A. Hameed","doi":"10.37899/journallamultiapp.v3i3.648","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i3.648","url":null,"abstract":"With the increasing complexity of programs comes an increased focus on ensuring the quality of these programs. Essentially, it depends on improving the methods of testing the quality of these programs in the two phases of building these programs and after their operation. Therefore, we are developing software testing methods and methodologies. This paper aims to discuss software testing methods and their classifications according to their main properties and any software that suits each method. The majority of the literature on software testing methods and techniques is also included.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134280046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magneto Thermosolutal Convection in a Compressible Viscoelastic Fluid 可压缩粘弹性流体中的磁热溶质对流
Journal La Multiapp Pub Date : 2022-06-20 DOI: 10.37899/journallamultiapp.v3i3.650
Pardeep Kumar
{"title":"Magneto Thermosolutal Convection in a Compressible Viscoelastic Fluid","authors":"Pardeep Kumar","doi":"10.37899/journallamultiapp.v3i3.650","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i3.650","url":null,"abstract":"In the presence of a magnetic field, a thermosolutal convection is postulated to occur in a compressible Rivlin-Ericksen viscoelastic fluid in a porous media. The dispersion relation is found by using the linear stability theory and the normal mode analysis approach, respectively. In the scenario of stationary convection, it was discovered that compressibility, magnetic fields, and steady solute gradients all serve to delay the beginning of the convection process, but medium permeability serves to speed up the beginning of the convection process. In addition to this, it has been discovered that the system is reliable for [equation not detected by OJS] and under the condition  [equation not detected by OJS]. The system goes into an unstable state. Overstability has also been looked at from the perspective of a scenario in which sufficient circumstances are met to rule out the possibility of the phenomenon occurring. It has been discovered that the steady gradient of the solute and the magnetic field both induce oscillatory modes into the system.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127622321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neural Network Algorithm for Budget Expenditure Prediction in LPP RRI Gorontalo LPP RRI预算支出预测的神经网络算法
Journal La Multiapp Pub Date : 2022-03-31 DOI: 10.37899/journallamultiapp.v3i2.596
Rubiyanto Maku
{"title":"Neural Network Algorithm for Budget Expenditure Prediction in LPP RRI Gorontalo","authors":"Rubiyanto Maku","doi":"10.37899/journallamultiapp.v3i2.596","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i2.596","url":null,"abstract":"In this Data Mining research, the researcher uses the Neural Network Algorithm to predict budget expenditures at LPP RRI Gorontalo, the goal is to find out how much cash spending at LPP RRI Gorontalo is on average in each month, so it will make it easier for the Treasurer to control cash disbursements in each month. month. Using 412 Expenditure Records Data from 2013 to 2021, the lowest RMSE value is at Hiden Layer 11, Training Cyle 400, Learning Rate 0.1 and Momentum 0.1 with RMSE 0.142. Prediction results look better because they are closer to Real Data, so Neural Networks can be used to predicting spending at LPP RRI Gorontalo.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116441481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distribution of Chlorophil-A and Sea Surface Temperature (SST) on Operation of Payang Catching Equipment in Gorontalo Bay Waters 戈连塔洛湾海域帕扬捕捞设备运行过程中叶绿素a和海温的分布
Journal La Multiapp Pub Date : 2022-03-31 DOI: 10.37899/journallamultiapp.v3i1.640
Asruddin Asruddin, Ady Jufri, Mohamad Sayuti Djau
{"title":"Distribution of Chlorophil-A and Sea Surface Temperature (SST) on Operation of Payang Catching Equipment in Gorontalo Bay Waters","authors":"Asruddin Asruddin, Ady Jufri, Mohamad Sayuti Djau","doi":"10.37899/journallamultiapp.v3i1.640","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i1.640","url":null,"abstract":"This research was carried out in January - August 2020 with the aim of looking at the temporal and spatial distribution of Chlorophyll-a (CHL-a) and Sea Surface Temperature (SST) in the waters of Gorontalo Bay, their effect on payang catches. The data used in the form of field data and image data were analyzed by descriptive analysis and analysis of Geographic Information Systems (GIS). Based on the results of the study, it was found that the existence of payang fishing gear in Gorontalo Bay is in an area that has a high chlorophyll content between the West Season, West-East Transition Season and East Season. The highest average payang catch was found in the West-East transition season compared to other seasons. The West-East transition season has sea surface temperatures between 30.64°C-30.99°C while the density of chlorophyll-a is 0.1701 mg/m3-0.1925 mg/m3.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121605106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Variable Thermal Conductivity and Viscosity on MHD Casson Nanofluid Flow Vertical Plate through Thermal Radiation Convective Temperature along with Velocity Slip 热辐射对流温度随速度滑移对MHD卡森纳米流体垂直板热导率和粘度的影响
Journal La Multiapp Pub Date : 2022-03-31 DOI: 10.37899/journallamultiapp.v3i2.583
Ramanuja Mani, A. Sudhaker, V. Nagradhika
{"title":"Effect of Variable Thermal Conductivity and Viscosity on MHD Casson Nanofluid Flow Vertical Plate through Thermal Radiation Convective Temperature along with Velocity Slip","authors":"Ramanuja Mani, A. Sudhaker, V. Nagradhika","doi":"10.37899/journallamultiapp.v3i2.583","DOIUrl":"https://doi.org/10.37899/journallamultiapp.v3i2.583","url":null,"abstract":"This article presents the influences of connected variable thickness with created conductivity, nanofluid flow over a vertical level plate through convective smooth, with velocity slip boundary surroundings. The controlling vehicle nonlinear divided differential stipulations with the interrupt surroundings are non- dimensionalized. The reachable path of motion of certain existing differential conditions is then diminished to a set of joined nonlinear quintessential differential conditions utilizing convenience modify. Numerical outcomes are getting for dimensionless velocity, temperature, and nanoparticle quantity. It is discovered that the velocity increments, while each temperature and nanoparticle extent partrot with improved estimations of variable maximum conductivity and consistency. At the same time as the Dufour range and Soret, comprehensive range augmentation with working up the relative and the thing subject decompose as the Schmidt range tendencies while the temperature area decreases with extending Prandtl number and Dufour number correlations are executed with scattered facts virtually taking parent proper now the numerical outcomes. Surprising consideration is seen. Taking the entirety into account, the effects of essential parameters on fluid velocity, temperature, and focus on dispersion moreover as on the partition total mass, heat, and mass exchange figures are audited in detail. Also, this existing consideration can determine purposes in the method, which include nanofluid works out.","PeriodicalId":272596,"journal":{"name":"Journal La Multiapp","volume":"44 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113974038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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